Table 2 Subjects’ rating of authorship portal

I find the feature highlighting of the Authorship Portal to be more useful in identifying message features than manually reading the forum messages.

4.68

0.54

I find the authorship comparison spider chart of the Authorship Portal to be more useful in comparing authors’ writing than manually reading and comparing the authors’ messages.

4.81

0.48

I find the stylometric heatmap of the Authorship Portal to be more useful in feature usage than manually reading the forum messages.

4.74

0.51